MAX7490EEE

更新时间： 2024-11-26 22:55:11

品牌	Logo	应用领域
美信 - MAXIM		开关通用开关
页数	文件大小	规格书
18页	343K
描述
Dual Universal Switched-Capacitor Filters

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MAX7490EEE 数据手册

19-1768; Rev 0; 7/00

Dual Universal Switched-Capacitor Filters

General Description

Features

The MAX7490/MAX7491 consist of two identical low-

power, low-voltage, wide dynamic range, Rail-to-Rail^®,

2nd-order switched-capacitor building blocks. Each of

the two filter sections, together with two to four external

resistors, can generate all standard 2nd-order func-

tions: bandpass, lowpass, highpass, and notch (band

reject). Three of these functions are simultaneously

available. Fourth-order filters can be obtained by cas-

cading the two 2nd-order filter sections. Similarly, high-

er order filters can easily be created by cascading

multiple MAX7490/MAX7491s.

ꢀ Dual 2nd-Order Filter in a 16-Pin QSOP Package

ꢀ High Accuracy

Q Accuracy: ±±02ꢀ

Clock-to-Center Frequency Error: ±±02ꢀ

ꢀ Rail-to-Rail Input and Output Operation

ꢀ Single-Supply Operation: +5V (MAX749±)

or +3V (MAX7491)

ꢀ Internal or External Clock

ꢀ Highpass, Lowpass, Bandpass, and Notch Filters

ꢀ Clock-to-Center Frequency Ratio of 1±±:1

Two clocking options are available: self-clocking

(through the use of an external capacitor) or external

clocking for tighter cutoff frequency control. The clock-

to-center frequency ratio is 100:1. Sampling is done at

twice the clock frequency, further separating the cutoff

frequency and Nyquist frequency.

ꢀ Internal Sampling-to-Center Frequency Ratio

of 2±±:1

ꢀ Center Frequency up to 4±kHz

The MAX7490/MAX7491 have an internal rail splitter

that establishes a precise common voltage needed for

single-supply operation. The MAX7490 operates from a

single +5V supply and the MAX7491 operates from a

single +3V supply. Both devices feature a low-power

shutdown mode and come in a 16-pin QSOP package.

ꢀ Easily Cascaded for Multipole Filters

ꢀ Low-Power Shutdown: <1µA Supply Current

Ordering Information

________________________Applications

SUPPLY

VOLTAGE

(+V)

PIN-

PACKAGE

PART

TEMP0 RANGE

Tunable Active Filters

Multipole Filters

MAX749±CEE

MAX7490EEE

MAX7491CEE

MAX7491EEE

0°C to +70°C

-40°C to +85°C

0°C to +70°C

16 QSOP

ADC Anti-Aliasing

Post-DAC Filtering

Adaptive Filtering

Phase-Locked Loops (PLLs)

Set-Top Boxes

-40°C to +85°C

Pin Configuration

TOP VIEW

LPA

BPA

16 LPB

15 BPB

NA/HPA

INVA

14 NB/HPB

Typical Application Circuit appears at end of data sheet.

MAX7490

MAX7491

13 INVB

12 SB

SHDN

GND

11 COM

10 EXTCLK

CLK

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

QSOP

________________________________________________________________ Maxim Integrated Products

For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

12 3 4 5 6 7...18

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与MAX7490EEE相关器件

型号	品牌	获取价格	描述	数据表
MAX7490EEE+	MAXIM	获取价格	Dual Universal Switched-Capacitor Filters
MAX7490EEE+T	MAXIM	获取价格	Switched Capacitor Filter, 2 Func, Butterworth/bessel/elliptic, Universal, BICMOS, PDSO16,
MAX7490EEE-T	MAXIM	获取价格	暂无描述
MAX7490-MAX7491	MAXIM	获取价格	Dual Universal Switched-Capacitor Filters
MAX7491	MAXIM	获取价格	Dual Universal Switched-Capacitor Filters
MAX7491	ADI	获取价格	双路、通用开关电容滤波器
MAX7491CEE	MAXIM	获取价格	Dual Universal Switched-Capacitor Filters
MAX7491CEE+	MAXIM	获取价格	Dual Universal Switched-Capacitor Filters
MAX7491CEE+T	MAXIM	获取价格	Switched Capacitor Filter, 2 Func, Butterworth/bessel/elliptic, Universal, BICMOS, PDSO16,
MAX7491CEE-T	MAXIM	获取价格	Switched Capacitor Filter, 2 Func, Butterworth/bessel/elliptic, Universal, BICMOS, PDSO16,

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